長興需牢記填料改集式密封的這些安裝要領
常用的(de)密(mi)(mi)封(feng)(feng)型式主(zhu)要有填(tian)(tian)(tian)料密(mi)(mi)封(feng)(feng)、機械密(mi)(mi)封(feng)(feng)等,填(tian)(tian)(tian)料密(mi)(mi)封(feng)(feng)。填(tian)(tian)(tian)料改集式密(mi)(mi)封(feng)(feng)是(shi)一種較為(wei)原始的(de)接(jie)觸(chu)式密(mi)(mi)封(feng)(feng),具有結構簡單、成本低(di)、更換簡便等優點,由于這些優點,因而在石油工(gong)業...